Mysql 如何创建表+;计算成本包括两列
我想按阶段计算成本,但不起作用。我的数据如下。我正在使用此命令计算成本Mysql 如何创建表+;计算成本包括两列,mysql,calculated-columns,Mysql,Calculated Columns,我想按阶段计算成本,但不起作用。我的数据如下。我正在使用此命令计算成本 SELECT Daily.dayno, activity.class, activity.phase, activity.duration/sum(activity.duration)*daily.daycost as cost from Daily INNER JOIN ( Select activity.dailyuid, sum(activity.duration) duration group
SELECT Daily.dayno, activity.class, activity.phase,
activity.duration/sum(activity.duration)*daily.daycost as cost
from Daily INNER JOIN
(
Select activity.dailyuid, sum(activity.duration) duration
group by dailyUID
) Activity
on activity.dailyuid=daily.dailyuid
group by class, phase
显然,上面的查询不起作用。我想要的是以阶段为例计算成本
Dailyuid DD1中的阶段SS1=4/12*1000,其中4是SS1的总小时数,12是Dailyuid DD1的总小时数,1000是Dailyuid DD1的成本
另一个例子是相位ST2=8/12*1000
IH=10.6/11.6*2000,依此类推
日表
DailyUID | Dayno | Daycost |
---------|-------|---------|
DD1 | 1 | 1000 |
DD2 | 2 | 2000 |
DD3 | 3 | 3000 |
活动表
DailyUID | CLASS | PHASE | Duration |
-----------------------------------
DD1 | TS | SS1 | 3 |
DD1 | TS | SS1 | 1 |
DD1 | TS | ST2 | 2 |
DD1 | P | ST2 | 6 |
DD2 | P | IH1 | 6.6 |
DD2 | U | IH1 | 4 |
DD2 | TS | IH2 | 1 |
DD3 | TU | SC1 | 7 |
DD3 | P | SC2 | 8 |
DD3 | U | CMPLT | 3 |
如果我理解正确,您需要在加入之前预先聚合表。需要一个额外的聚合:
select ap.phase,
(ap.duration / ad.duration) * d.daycost as cost
from (SELECT d.dailyUid, sum(daycost) as daycost
FROM Daily d
GROUP BY d.dailyuid
) d INNER JOIN
(Select a.dailyuid, sum(a.duration) as duration
from activity a
group by dailyUID
) ad
on ad.dailyuid = d.dailyuid join
(select a.dailyuid, a.phase, sum(a.duration) as duration
from activity a
group by a.dailyuid, a.phase
) ap
on ad.dailyuid = ap.dailyuid
group by phase;
SQL Fiddle是。我想我是通过(…)上的
SUM()实现的:
设置:
-- drop table Daily
create table Daily
(
DailyUID VARCHAR(6),
DayNo INT,
DayCost NUMERIC(18, 2)
)
go
insert into Daily values ('DD1', 1, 1000),
('DD2', 2 , 2000),
('DD1', 3 , 3000)
go
-- drop table ActivityTable
create table ActivityTable
(
DailyUID VARCHAR(6),
Class VARCHAR(2),
Phase VARCHAR(6),
Duration NUMERIC(5, 1)
)
go
insert into ActivityTable values
('DD1' , 'TS' , 'SS1' , 3 ),
('DD1' , 'TS' , 'SS1' , 1 ),
('DD1' , 'TS' , 'ST2' , 2 ),
('DD1' , 'P' , 'ST2' , 6 ),
('DD2' , 'P' , 'IH1' , 6.6 ),
('DD2' , 'U' , 'IH1' , 4 ),
('DD2' , 'TS' , 'IH2' , 1 ),
('DD3' , 'TU' , 'SC1' , 7 ),
('DD3' , 'P' , 'SC2' , 8 ),
('DD3' , 'U' , 'CMPLT' , 3 )
GO
脚本:(仅适用于SQL Server,请参阅下面的MySql版本)
[编辑-使其适用于MySql]
SELECT S.Phase, S.DailyUID, S.PhaseDuration, S.TotalDuration, S.PhaseDuration * 1.0 / S.TotalDuration * 1000
FROM (
SELECT DISTINCT ATOut.DailyUID, ATOut.Phase, PD.PhaseDuration, TD.TotalDuration
FROM ActivityTable ATOut
JOIN (SELECT AT.Phase, AT.DailyUID, SUM(AT.Duration) PhaseDuration FROM ActivityTable AT GROUP BY Phase, DailyUID) PD
ON PD.Phase = ATOut.Phase AND PD.DailyUID = ATOut.DailyUID
JOIN (SELECT AT.DailyUID, SUM(AT.Duration) TotalDuration FROM ActivityTable AT GROUP BY DailyUID) TD
ON TD.DailyUID = ATOut.DailyUID
) S
您的查询一团糟,因此我认为您应该向我们显示您的预期输出。这两个表中的dailyUID不同。是打字错误吗?@LelioFaieta很抱歉我没弄错it@rookie_coder我说的是,在第一个表中有“DD1”,在第二个表中有“DDD1”。第一次是两个字母和一个数字。第二次是三个字母和一个数字。这两个人永远不会join@LelioFaieta很抱歉成为noob对我来说很难我已经纠正了他们我在SQL Fiddle上尝试了这个,但似乎不起作用你能不能建议进一步@rookie\u coder。感谢您设置SQL小提琴。我已经修正了输入错误。几乎正确,但是当我在这里使用它时,IH的计算值错误,其余的都是正确的。你能建议值应该是7.6/12.6*2000=1206.35吗?但是在你的查询中,输出是1230.7692。提前谢谢你。我调整了持续时间小时的值,然后重新运行查询,结果是正确的。非常感谢非常感谢你帮我做了这么复杂的计算。对不起,我错过了。我还包括了一个MySQL版本,尽管你的很好用。MySql缺少T-SQL的这么多功能,这是一件微不足道的事情。这些特性不是来自T-SQL。它们是ANSI标准特性。而且,是的,当数据库不支持有用的ANSI构造时,这是一个遗憾。
SELECT S.Phase, S.DailyUID, S.PhaseDuration, S.TotalDuration, S.PhaseDuration * 1.0 / S.TotalDuration * 1000
FROM (
SELECT DISTINCT ATOut.DailyUID, ATOut.Phase, PD.PhaseDuration, TD.TotalDuration
FROM ActivityTable ATOut
JOIN (SELECT AT.Phase, AT.DailyUID, SUM(AT.Duration) PhaseDuration FROM ActivityTable AT GROUP BY Phase, DailyUID) PD
ON PD.Phase = ATOut.Phase AND PD.DailyUID = ATOut.DailyUID
JOIN (SELECT AT.DailyUID, SUM(AT.Duration) TotalDuration FROM ActivityTable AT GROUP BY DailyUID) TD
ON TD.DailyUID = ATOut.DailyUID
) S